Your advantages

• Low-noise due to optimised overall flow and noise concept (multistage centrifugal pumps)
• Maximum operating reliability through the use of fully electronic RainControl Hybrid controller
• High economic efficiency due to fresh water replenishment according to requirements
• Automatic control of the feeding pump
• System/level control in low-voltage range
• Tested according to requirements of RAL-GZ 994 quality standard

Construction

Automatic rainwater utilisation system with run-down tanks and 2 non-self-priming pumps

Application

Commercial and industrial rainwater utilisation for conserving drinking water as a hybrid system in conjunction with rainwater storage tanks or vessels

Equipment/function

• Connection-ready module with compact construction
• Completely connected, electrically and hydraulically, and mounted on vibration-insulated baseplate, comprising:
• 2 non-self-priming, corrosion-free, low-noise MultiPress series centrifugal pumps
• R 1 1/2 joint tubing on the pressure side, including transmitter unit with 8-l diaphragm pressure vessel following the flow-through principle and shut-off device with draining, manometer 0–10 bar
• Ball valve on suction and pressure sides and non-return valve
• A large-volume hybrid tank with all connections, non-turbulent supply lines and overflow with siphon
• RainControl Hybrid central switchgear with control electronics, 4–20 mA pressure transmitter and level control in the low-voltage range
• Signals concerning operation and malfunctions
• Steady system control by means of cyclical pump cycling and integrated test run on idle pumps
• Automatic fault-actuated switchover and peak-load cut-in
• Automatic water exchange in the replenishment reservoir
• Permanent display of rainwater storage level, system pressure, operating status via LCD (optional)
• Including DVGW-certified R 1 solenoid valve for the drinking water replenishment

Scope of delivery

• Two noise-reduced, non-self-priming, multistage centrifugal pumps
• 400 l hybrid tank with all required connections, transmitter unit with 8 l diaphragm pressure vessel, central switchgear, RainControl-Hybrid with control electronics and level control device of Wilo-Drain TM or TS rainwater storage tank pumps in three-phase version (optionally in single-phase version) to be ordered separately

Type key

Technical data

• Max. operating pressure 10 bar
• Protection class IP54
• Connections:
• Pressure pipe/pressure-side joint tubing R 1 ½
• Inflow pipe HT 50
• Overflow connection DN 100

Materials

• Pump housing made of 1.4301 stainless steel
• Impeller made of Noryl
• Shaft 1.4028 stainless steel
• Mechanical seal made of ceramic/carbon
• Stage chambers made of Noryl
• Diaphragm expansion tank, steel, painted

Description/construction

• Ready-to-connect water-supply unit with 2 water-supply pumps as compact module for commercial and industrial rainwater utilisation
• For fully automatic supply with rainwater from ground reservoir or rainwater storage tank using submersible motor pumps as feeding pumps
• Depending on the pump dimensioning, greater distances between the system and rainwater storage tank can be bridged over with this hybrid system (see also Wilo submersible motor pumps, Wilo-Drain series)
• High-volume hybrid tank with all integrated functions offers needs-based replenishment of drinking water in the consumer network when rainwater storage tanks are not full.
• Fully-electronic control unit for controlling the water supply and rainwater storage tank pump, equipped with main switch, control switch for each pump with Manual-0-Automatic function and display of the operating status operation/fault for each pump as well as low-water display
• Depending on the pressure, pumps are switched on and off in cascade according to the need for water
• Diaphragm pressure vessel for energy savings in the event of smallest leakages in buildings
• Steady system control by means of cyclical pump cycling and integrated test run on idle pumps.
• Automatic fault-actuated switchover and peak-load cut-in guarantee maximum system availability.
• In the event of low water, the system is switched off by built-in dry-running protection
• Including integrated electronic motor protection
• Control device displays extensive signals; it is also equipped with potential-free contacts for collective run signals and collective fault signals
• System is ideal for connection to building management system (GLT/DDC)